Psychometric properties of a questionnaire to measure adherence to treatment in patients with type 1 diabetes mellitus.
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ABSTRACT: Aim
To validate the psychometric properties of a questionnaire to measure adherence to treatment among people with type 1 diabetes mellitus and to evaluate its relationship with metabolic control.Design
A cross-sectional study of 167 adult people with type 1 diabetes mellitus recruited from the Endocrinology Service of University Hospital Doctor Peset (Spain).Methods
The validity of the content, construct and reliability of the instrument were evaluated and the results correlated with levels of glycosylated haemoglobin.Results
The questionnaire was composed of 25 items and 5 dimensions, with a score of 25-150 points and an internal consistency of 0.92, according to Cronbach's coefficient α. The content of validity ratio and the construct (exploratory functional analysis, Kaiser-Meyer-Olkin index and Barlett's spherical test) were adequate. We observed a significant correlation between glycosylated haemoglobin levels and treatment adherence.Conclusion
The questionnaire to measure adherence to treatment in type 1 diabetes mellitus is consistent, reliable and valid, showing an excellent association with degree of metabolic control.
SUBMITTER: Grau-Del Valle C
PROVIDER: S-EPMC9190673 | biostudies-literature | 2022 Jul
REPOSITORIES: biostudies-literature
Publications
Psychometric properties of a questionnaire to measure adherence to treatment in patients with type 1 diabetes mellitus.
Grau-Del Valle Carmen C Marco-Expósito José Francisco JF Solá Eva E Montoya-Castilla Inmaculada I Morillas Carlos C Hernández-Mijares Antonio A Bañuls Celia C
Nursing open 20220420 4
<h4>Aim</h4>To validate the psychometric properties of a questionnaire to measure adherence to treatment among people with type 1 diabetes mellitus and to evaluate its relationship with metabolic control.<h4>Design</h4>A cross-sectional study of 167 adult people with type 1 diabetes mellitus recruited from the Endocrinology Service of University Hospital Doctor Peset (Spain).<h4>Methods</h4>The validity of the content, construct and reliability of the instrument were evaluated and the results co ...[more]
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Project description:BackgroundThis study examines the psychometric properties of a measure of distress specific to cancer and its treatment, as tested in patients receiving hematopoietic cell transplantation (HCT).MethodsWith multicenter enrollment, the Cancer and Treatment Distress (CTXD) measure was administered to adults beginning HCT as part of an assessment that included the Center for Epidemiologic Studies Depression (CESD), Profile of Mood States, and Medical Outcomes Study Short Form 36 (SF-36).ResultsFrom eight transplant centers, 176 of 219 eligible patients completed the assessment. Average age was 46.7 years (SD = 11.9), 59% were male, and the majority were identified as Caucasian (93%). Principal components analysis with the CTXD identified 22 items that loaded onto six factors explaining 69% of the variance: uncertainty, health burden, identity, medical demands, finances, and family strain. Internal consistency reliability for the 22 items was 0.91. The receiver operating characteristic area under the curve was 0.85 (95% CI [0.79, 0.91]), with a cut point of 1.1 resulting in a sensitivity rate of 0.91 and a specificity rate of 0.58. Convergent validity and divergent validity were confirmed with large correlations of the CTXD total score with the CESD, Profile of Mood States, and SF-36 mental health; and a smaller correlation with the SF-36 physical function (r = -0.30).ConclusionsThe CTXD is a reliable and valid measure of distress for HCT recipients and captures nearly all cases of depression on the CESD in addition to detecting distress in those who are not depressed. It has potential value as both a research and clinical screening measure for distress.
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